SAP Message 29040 - Change number & does not allow you to change BOMs

Diagnosis
You want to use change number &V1& to change a BOM or to create avariant for an existing BOM. However, this change number does not allowchanges to BOMs.
One of the following situations triggered this error message:

  • In the change master, the corresponding object type (eg. BOM,
  • routing/plan) is not active, so it is not possible to create or changeobjects with this object type using this change number.
    • The corresponding object type is currently locked for the creation of
    • new data or changes.
      • Change number &V1& is the number of an ECR. In this case, an object
      • management record is required for the BOM. However, no object managementrecords exist for the selected ECR.

        Procedure
        Check your entries.
        If you really want to create your variant or make your changes usingthis change number, consult your system manager responsible for changemaster records to get the change number adapted to suit.